ANTH 101 Chapter Notes - Chapter 9: Foramen Magnum, Premolar, Gluteal Muscles
Document Summary
Chapter 9: early hominid origins and evolution: the roots of humanity. Charles darwin"s hunting hypothesis: darwin concluded that because of the remarkable anatomical similarity between humans and. Peter rodman and henry mchenry"s patchy forest hypothesis: bipedalism arose in areas where the forest was becoming fragmented, a process that began toward the end of the miocene, quadrupedalism not energy efficient in africa"s patchy forest. For apes and humans, the time from birth to the infant"s independence can be rather long: downside of this extended care period is that it gives apes a reproductive disadvantage. Infants and mothers were provided with more food, they would not have to move around as much for resources. Sexual dimorphism and human behavior: many living primate species are highly dimorphic sexually: males are considerably larger than females. If early hominids were not especially dimorphic, then male competition for mates probably was not part of early hominid social behavior.
